DM inbox caching and linkification improvements (v0.2.4)

- Add MessageContent component for linkified DM messages
- URLs open in new tab, nostr: entities open in secondary pane
- Implement background refresh that merges instead of clearing cache
- Show cached conversations immediately on page load
- Fix navigation not reloading conversations unnecessarily

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "smesh",
-  "version": "0.2.2",
+  "version": "0.2.4",
   "description": "A user-friendly Nostr client for exploring relay feeds",
   "private": true,
   "type": "module",

src/components/Inbox/MessageContent.tsx

@@ -0,0 +1,120 @@
+import { useSecondaryPage } from '@/PageManager'
+import {
+  EmbeddedEventParser,
+  EmbeddedMentionParser,
+  EmbeddedUrlParser,
+  parseContent
+} from '@/lib/content-parser'
+import { toNote, toProfile } from '@/lib/link'
+import { truncateUrl } from '@/lib/url'
+import { cn } from '@/lib/utils'
+import { useMemo } from 'react'
+
+interface MessageContentProps {
+  content: string
+  className?: string
+  /** If true, links will be styled for dark background (primary-foreground color) */
+  isOwnMessage?: boolean
+}
+
+/**
+ * Renders DM message content with linkified URLs and nostr entities.
+ * - URLs open in new tab
+ * - nostr:npub/nprofile opens user profile in secondary pane
+ * - nostr:note1/nevent opens note in secondary pane
+ */
+export default function MessageContent({ content, className, isOwnMessage }: MessageContentProps) {
+  const { push } = useSecondaryPage()
+
+  const nodes = useMemo(() => {
+    return parseContent(content, [EmbeddedEventParser, EmbeddedMentionParser, EmbeddedUrlParser])
+  }, [content])
+
+  const linkClass = cn(
+    'underline cursor-pointer hover:opacity-80',
+    isOwnMessage ? 'text-primary-foreground' : 'text-primary'
+  )
+
+  return (
+    <span className={cn('whitespace-pre-wrap break-words', className)}>
+      {nodes.map((node, index) => {
+        if (node.type === 'text') {
+          return node.data
+        }
+
+        // URLs - open in new tab
+        if (node.type === 'url' || node.type === 'image' || node.type === 'media') {
+          const url = node.data as string
+          return (
+            <a
+              key={index}
+              href={url}
+              target="_blank"
+              rel="noreferrer"
+              className={linkClass}
+              onClick={(e) => e.stopPropagation()}
+            >
+              {truncateUrl(url)}
+            </a>
+          )
+        }
+
+        // YouTube and X posts - open in new tab
+        if (node.type === 'youtube' || node.type === 'x-post') {
+          const url = node.data as string
+          return (
+            <a
+              key={index}
+              href={url}
+              target="_blank"
+              rel="noreferrer"
+              className={linkClass}
+              onClick={(e) => e.stopPropagation()}
+            >
+              {truncateUrl(url)}
+            </a>
+          )
+        }
+
+        // nostr: mention (npub/nprofile) - open profile in secondary pane
+        if (node.type === 'mention') {
+          const bech32 = (node.data as string).replace('nostr:', '')
+          return (
+            <button
+              key={index}
+              className={linkClass}
+              onClick={(e) => {
+                e.stopPropagation()
+                push(toProfile(bech32))
+              }}
+            >
+              @{bech32.slice(0, 12)}...
+            </button>
+          )
+        }
+
+        // nostr: event (note1/nevent/naddr) - open note in secondary pane
+        if (node.type === 'event') {
+          const bech32 = (node.data as string).replace('nostr:', '')
+          // Determine display based on prefix
+          const isNote = bech32.startsWith('note1')
+          const prefix = isNote ? 'note' : bech32.startsWith('nevent') ? 'nevent' : 'naddr'
+          return (
+            <button
+              key={index}
+              className={linkClass}
+              onClick={(e) => {
+                e.stopPropagation()
+                push(toNote(bech32))
+              }}
+            >
+              {prefix}:{bech32.slice(prefix.length, prefix.length + 8)}...
+            </button>
+          )
+        }
+
+        return null
+      })}
+    </span>
+  )
+}

src/components/Inbox/MessageView.tsx

@@ -6,7 +6,7 @@ import { useNostr } from '@/providers/NostrProvider'
 import client from '@/services/client.service'
 import indexedDb from '@/services/indexed-db.service'
 import { TDirectMessage, TProfile } from '@/types'
-import { ArrowLeft, ChevronDown, Loader2, MoreVertical, RefreshCw, Settings, Trash2, Undo2, Users, X } from 'lucide-react'
+import { ArrowLeft, ChevronDown, ChevronUp, Loader2, MoreVertical, RefreshCw, Settings, Trash2, Undo2, Users, X } from 'lucide-react'
 import { useEffect, useRef, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Button } from '../ui/button'
@@ -19,6 +19,7 @@ import {
   DropdownMenuTrigger
 } from '../ui/dropdown-menu'
 import MessageComposer from './MessageComposer'
+import MessageContent from './MessageContent'
 import MessageInfoModal from './MessageInfoModal'
 import ConversationSettingsModal from './ConversationSettingsModal'
 import { useFollowList } from '@/providers/FollowListProvider'
@@ -58,9 +59,28 @@ export default function MessageView({ onBack }: MessageViewProps) {
   const [newMessageCount, setNewMessageCount] = useState(0)
   const lastMessageCountRef = useRef(0)
   const isAtBottomRef = useRef(true)
+  // Progressive loading: start with 20 messages, load more on demand
+  const [visibleLimit, setVisibleLimit] = useState(20)
+  const LOAD_MORE_INCREMENT = 20
 
   const isFollowing = currentConversation ? followingSet.has(currentConversation) : false
 
+  // Calculate visible messages (show most recent, allow loading older)
+  const hasMoreMessages = messages.length > visibleLimit
+  const visibleMessages = hasMoreMessages
+    ? messages.slice(-visibleLimit) // Show last N messages (most recent)
+    : messages
+
+  // Load more older messages
+  const loadMoreMessages = () => {
+    setVisibleLimit((prev) => prev + LOAD_MORE_INCREMENT)
+  }
+
+  // Reset visible limit when conversation changes
+  useEffect(() => {
+    setVisibleLimit(20)
+  }, [currentConversation])
+
   // Handle pulsing animation for new conversations
   useEffect(() => {
     if (isNewConversation) {
@@ -288,12 +308,26 @@ export default function MessageView({ onBack }: MessageViewProps) {
           </div>
         ) : (
           <div className="space-y-3">
+            {/* Load more button at top */}
+            {hasMoreMessages && (
+              <div className="flex justify-center py-2">
+                <Button
+                  variant="ghost"
+                  size="sm"
+                  onClick={loadMoreMessages}
+                  className="text-xs text-muted-foreground"
+                >
+                  <ChevronUp className="size-4 mr-1" />
+                  {t('Load older messages')} ({messages.length - visibleLimit} more)
+                </Button>
+              </div>
+            )}
             {isLoadingConversation && (
               <div className="flex justify-center py-2">
                 <Loader2 className="size-4 animate-spin text-muted-foreground" />
               </div>
             )}
-            {messages.map((message) => {
+            {visibleMessages.map((message) => {
               const isOwn = message.senderPubkey === pubkey
               const isSelected = selectedMessages.has(message.id)
               return (
@@ -328,7 +362,11 @@ export default function MessageView({ onBack }: MessageViewProps) {
                       isSelected && 'ring-2 ring-primary ring-offset-2'
                     )}
                   >
-                    <p className="text-sm whitespace-pre-wrap break-words">{message.content}</p>
+                    <MessageContent
+                      content={message.content}
+                      className="text-sm"
+                      isOwnMessage={isOwn}
+                    />
                     <div
                       className={cn(
                         'flex items-center justify-between gap-2 mt-1 text-xs',

src/constants.ts

@@ -63,7 +63,9 @@ export const StorageKey = {
 export const ApplicationDataKey = {
   NOTIFICATIONS_SEEN_AT: 'seen_notifications_at',
   SETTINGS: 'smesh_settings',
-  DM_DELETED_MESSAGES: 'dm_deleted_messages'
+  DM_DELETED_MESSAGES: 'dm_deleted_messages',
+  // Relay hint for DMs - contains bech32-encoded relays (nrelay1...) that smesh clients should check first
+  DM_RELAY_HINT: 'smesh_dm_relays'
 }
 
 export const BIG_RELAY_URLS = [

src/providers/DMProvider.tsx

@@ -1,6 +1,12 @@
 import { ApplicationDataKey, BIG_RELAY_URLS } from '@/constants'
 import { createDeletedMessagesDraftEvent } from '@/lib/draft-event'
-import dmService, { IDMEncryption, isConversationDeleted, isMessageDeleted } from '@/services/dm.service'
+import dmService, {
+  clearPlaintextCache,
+  decryptMessagesInBatches,
+  IDMEncryption,
+  isConversationDeleted,
+  isMessageDeleted
+} from '@/services/dm.service'
 import indexedDb from '@/services/indexed-db.service'
 import storage, { dispatchSettingsChanged } from '@/services/local-storage.service'
 import client from '@/services/client.service'
@@ -89,6 +95,9 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
 
   // Track which conversation load is in progress to prevent race conditions
   const loadingConversationRef = useRef<string | null>(null)
+  // Track if we've already initialized to avoid reloading on navigation
+  const hasInitializedRef = useRef(false)
+  const lastPubkeyRef = useRef<string | null>(null)
 
   // Create encryption wrapper object for dm.service
   const encryption: IDMEncryption | null = useMemo(() => {
@@ -106,6 +115,15 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
   // Load deleted state and conversations when user is logged in
   useEffect(() => {
     if (pubkey && encryption) {
+      // Skip if already initialized for this pubkey (e.g., navigating back)
+      if (hasInitializedRef.current && lastPubkeyRef.current === pubkey) {
+        return
+      }
+
+      // Mark as initialized for this pubkey
+      hasInitializedRef.current = true
+      lastPubkeyRef.current = pubkey
+
       // Load deleted state FIRST before anything else
       const loadDeletedStateAndConversations = async () => {
         // Step 1: Load deleted state from IndexedDB
@@ -160,12 +178,13 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
           setHasMoreConversations(conversations.length > CONVERSATIONS_PER_PAGE)
         }
 
-        // Step 4: Refresh from network
-        refreshConversations()
+        // Step 4: Background refresh from network (don't clear existing data)
+        backgroundRefreshConversations()
       }
 
       loadDeletedStateAndConversations()
     } else {
+      // Clear all state on logout
       setConversations([])
       setAllConversations([])
       setMessages([])
@@ -175,6 +194,11 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
       setDeletedState(null)
       setSelectedMessages(new Set())
       setIsSelectionMode(false)
+      // Clear in-memory plaintext cache
+      clearPlaintextCache()
+      // Reset initialization flag so we reload on next login
+      hasInitializedRef.current = false
+      lastPubkeyRef.current = null
     }
   }, [pubkey, encryption])
 
@@ -235,28 +259,43 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
           return // Abort - user switched conversations
         }
 
-        // Decrypt all messages in parallel for speed
-        const decryptedResults = await Promise.all(
-          events.map((event) => dmService.decryptMessage(event, encryption, pubkey))
-        )
+        // Decrypt messages in batches to avoid blocking UI
+        // Progressive updates: show messages as they're decrypted
+        const allDecrypted: TDirectMessage[] = []
 
-        // Filter to only messages in this conversation (excluding deleted)
-        const decrypted = decryptedResults.filter((message): message is TDirectMessage => {
-          if (!message) return false
-          const partner =
-            message.senderPubkey === pubkey ? message.recipientPubkey : message.senderPubkey
-          if (partner !== targetConversation) return false
-          // Filter out deleted messages
-          return !isMessageDeleted(message.id, targetConversation, message.createdAt, deletedState)
-        })
+        await decryptMessagesInBatches(
+          events,
+          encryption,
+          pubkey,
+          10, // batch size
+          (batchMessages) => {
+            // Check if still on same conversation before updating
+            if (loadingConversationRef.current !== targetConversation) return
+
+            // Filter to only messages in this conversation (excluding deleted)
+            const validMessages = batchMessages.filter((message) => {
+              const partner =
+                message.senderPubkey === pubkey ? message.recipientPubkey : message.senderPubkey
+              if (partner !== targetConversation) return false
+              return !isMessageDeleted(message.id, targetConversation, message.createdAt, deletedState)
+            })
+
+            allDecrypted.push(...validMessages)
+
+            // Sort and update progressively
+            const sorted = [...allDecrypted].sort((a, b) => a.createdAt - b.createdAt)
+            setMessages(sorted)
+            setConversationMessages((prev) => new Map(prev).set(targetConversation, sorted))
+          }
+        )
 
         // Check again after decryption (which can take time)
         if (loadingConversationRef.current !== targetConversation) {
           return // Abort - user switched conversations
         }
 
-        // Sort by time
-        const sorted = decrypted.sort((a, b) => a.createdAt - b.createdAt)
+        // Final sort
+        const sorted = allDecrypted.sort((a, b) => a.createdAt - b.createdAt)
 
         // Update state only if still on same conversation
         setConversationMessages((prev) => new Map(prev).set(targetConversation, sorted))
@@ -287,21 +326,120 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
     loadConversation()
   }, [currentConversation, pubkey, encryption, relayList, deletedState])
 
+  // Background refresh - merges new data without clearing existing cache
+  const backgroundRefreshConversations = useCallback(async () => {
+    if (!pubkey || !encryption) return
+
+    try {
+      // Get relay URLs
+      const relayUrls = relayList?.read || []
+
+      // Fetch recent DM events (raw, not decrypted)
+      const events = await dmService.fetchRecentDMEvents(pubkey, relayUrls)
+
+      // Separate NIP-04 events and gift wraps
+      const nip04Events = events.filter((e) => e.kind === 4)
+      const giftWraps = events.filter((e) => e.kind === 1059)
+
+      // Build conversation map from existing conversations
+      const conversationMap = new Map<string, TConversation>()
+      allConversations.forEach((c) => conversationMap.set(c.partnerPubkey, c))
+
+      // Add NIP-04 conversations
+      const nip04Convs = dmService.groupEventsIntoConversations(nip04Events, pubkey)
+      nip04Convs.forEach((conv, key) => {
+        const existing = conversationMap.get(key)
+        if (!existing || conv.lastMessageAt > existing.lastMessageAt) {
+          conversationMap.set(key, conv)
+        }
+      })
+
+      // Update UI with NIP-04 data (filtered by deleted state)
+      const updateAndShowConversations = () => {
+        const validConversations = Array.from(conversationMap.values())
+          .filter((conv) => conv.partnerPubkey && typeof conv.partnerPubkey === 'string')
+          .filter((conv) => !isConversationDeleted(conv.partnerPubkey, conv.lastMessageAt, deletedState))
+        const sortedConversations = validConversations.sort(
+          (a, b) => b.lastMessageAt - a.lastMessageAt
+        )
+        setAllConversations(sortedConversations)
+        setConversations(sortedConversations.slice(0, CONVERSATIONS_PER_PAGE))
+        setHasMoreConversations(sortedConversations.length > CONVERSATIONS_PER_PAGE)
+      }
+
+      updateAndShowConversations()
+
+      // Process gift wraps in background (progressive, no UI blocking)
+      const sortedGiftWraps = giftWraps.sort((a, b) => b.created_at - a.created_at)
+
+      for (const giftWrap of sortedGiftWraps) {
+        try {
+          const message = await dmService.decryptMessage(giftWrap, encryption, pubkey)
+          if (message && message.senderPubkey && message.recipientPubkey) {
+            const partnerPubkey =
+              message.senderPubkey === pubkey ? message.recipientPubkey : message.senderPubkey
+
+            if (!partnerPubkey || partnerPubkey === '__reaction__') continue
+
+            const existing = conversationMap.get(partnerPubkey)
+            if (!existing || message.createdAt > existing.lastMessageAt) {
+              conversationMap.set(partnerPubkey, {
+                partnerPubkey,
+                lastMessageAt: message.createdAt,
+                lastMessagePreview: message.content.substring(0, 100),
+                unreadCount: 0,
+                preferredEncryption: 'nip17'
+              })
+              updateAndShowConversations()
+            }
+
+            // Cache conversation metadata
+            indexedDb
+              .putDMConversation(
+                pubkey,
+                partnerPubkey,
+                message.createdAt,
+                message.content.substring(0, 100),
+                'nip17'
+              )
+              .catch(() => {})
+          }
+        } catch {
+          // Skip failed decryptions silently
+        }
+      }
+
+      // Final update and cache all conversations
+      updateAndShowConversations()
+      const finalConversations = Array.from(conversationMap.values())
+      Promise.all(
+        finalConversations.map((conv) =>
+          indexedDb.putDMConversation(
+            pubkey,
+            conv.partnerPubkey,
+            conv.lastMessageAt,
+            conv.lastMessagePreview,
+            conv.preferredEncryption
+          )
+        )
+      ).catch(() => {})
+    } catch {
+      // Background refresh failed silently - cached data still shown
+    }
+  }, [pubkey, encryption, relayList, deletedState, allConversations])
+
+  // Full refresh - clears caches and reloads everything (manual action)
   const refreshConversations = useCallback(async () => {
     if (!pubkey || !encryption) return
 
     setIsLoading(true)
     setError(null)
 
-    // Clear all local state
-    setConversations([])
-    setAllConversations([])
-    setConversationMessages(new Map())
-    setLoadedConversations(new Set())
-
     try {
-      // Clear all DM caches for a fresh start
+      // Clear caches for fresh start (only on manual refresh)
       await indexedDb.clearAllDMCaches()
+      setConversationMessages(new Map())
+      setLoadedConversations(new Set())
 
       // Get relay URLs
       const relayUrls = relayList?.read || []
@@ -705,9 +843,9 @@ export function DMProvider({ children }: { children: React.ReactNode }) {
     // Publish to relays
     await publishDeletedState(newDeletedState)
 
-    // Trigger a refresh of conversations
-    await refreshConversations()
-  }, [pubkey, currentConversation, deletedState, publishDeletedState, refreshConversations])
+    // Trigger a background refresh of conversations
+    await backgroundRefreshConversations()
+  }, [pubkey, currentConversation, deletedState, publishDeletedState, backgroundRefreshConversations])
 
   // Filter out deleted conversations from the list
   const filteredConversations = useMemo(() => {

src/services/dm.service.ts

@@ -11,6 +11,74 @@ import { Event, kinds, VerifiedEvent } from 'nostr-tools'
 import client from './client.service'
 import indexedDb from './indexed-db.service'
 
+// In-memory plaintext cache for fast access (avoids async IndexedDB lookups on re-render)
+const plaintextCache = new Map<string, string>()
+const MAX_CACHE_SIZE = 1000
+
+/**
+ * Get plaintext from in-memory cache
+ */
+export function getCachedPlaintext(eventId: string): string | undefined {
+  return plaintextCache.get(eventId)
+}
+
+/**
+ * Set plaintext in in-memory cache (with LRU eviction)
+ */
+export function setCachedPlaintext(eventId: string, plaintext: string): void {
+  // Simple LRU: if cache is full, delete oldest entries
+  if (plaintextCache.size >= MAX_CACHE_SIZE) {
+    const keysToDelete = Array.from(plaintextCache.keys()).slice(0, 100)
+    keysToDelete.forEach(k => plaintextCache.delete(k))
+  }
+  plaintextCache.set(eventId, plaintext)
+}
+
+/**
+ * Clear the plaintext cache (e.g., on logout)
+ */
+export function clearPlaintextCache(): void {
+  plaintextCache.clear()
+}
+
+/**
+ * Decrypt messages in batches to avoid blocking the UI
+ * Yields control back to the event loop between batches
+ */
+export async function decryptMessagesInBatches(
+  events: Event[],
+  encryption: IDMEncryption,
+  myPubkey: string,
+  batchSize: number = 10,
+  onBatchComplete?: (messages: TDirectMessage[], progress: number) => void
+): Promise<TDirectMessage[]> {
+  const allMessages: TDirectMessage[] = []
+  const total = events.length
+
+  for (let i = 0; i < events.length; i += batchSize) {
+    const batch = events.slice(i, i + batchSize)
+
+    // Process batch
+    const batchResults = await Promise.all(
+      batch.map((event) => dmService.decryptMessage(event, encryption, myPubkey))
+    )
+
+    const validMessages = batchResults.filter((m): m is TDirectMessage => m !== null)
+    allMessages.push(...validMessages)
+
+    // Report progress
+    const progress = Math.min((i + batchSize) / total, 1)
+    onBatchComplete?.(validMessages, progress)
+
+    // Yield to event loop between batches (prevents UI blocking)
+    if (i + batchSize < events.length) {
+      await new Promise(resolve => setTimeout(resolve, 0))
+    }
+  }
+
+  return allMessages
+}
+
 /**
  * Create and publish a kind 5 delete request for own messages
  * This requests relays to delete the original event
@@ -141,6 +209,10 @@ class DMService {
   ): Promise<Event[]> {
     const allRelays = [...new Set([...relayUrls, ...BIG_RELAY_URLS])]
 
+    // Get partner's inbox relays for better NIP-17 discovery
+    const partnerInboxRelays = await this.fetchPartnerInboxRelays(partnerPubkey)
+    const inboxRelays = [...new Set([...relayUrls, ...partnerInboxRelays, ...BIG_RELAY_URLS])]
+
     // Fetch NIP-04 messages between user and partner (with timeout)
     const [incomingNip04, outgoingNip04, giftWraps] = await Promise.all([
       // Messages FROM partner TO user
@@ -163,9 +235,9 @@ class DMService {
         }),
         DM_FETCH_TIMEOUT_MS
       ),
-      // Gift wraps addressed to user (we'll filter by sender after decryption)
+      // Gift wraps addressed to user - check both regular relays and inbox relays
       withTimeout(
-        client.fetchEvents(allRelays, {
+        client.fetchEvents(inboxRelays, {
           kinds: [KIND_GIFT_WRAP],
           '#p': [pubkey],
           limit: 500
@@ -192,10 +264,18 @@ class DMService {
   ): Promise<TDirectMessage | null> {
     try {
       if (event.kind === KIND_ENCRYPTED_DM) {
-        // NIP-04 decryption - check content cache first
-        const cached = await indexedDb.getDecryptedContent(event.id)
-        if (cached) {
-          return this.buildDirectMessage(event, cached, myPubkey, 'nip04')
+        // NIP-04 decryption - check in-memory cache first (fastest)
+        const memCached = getCachedPlaintext(event.id)
+        if (memCached) {
+          return this.buildDirectMessage(event, memCached, myPubkey, 'nip04')
+        }
+
+        // Check IndexedDB cache (slower but persistent)
+        const dbCached = await indexedDb.getDecryptedContent(event.id)
+        if (dbCached) {
+          // Populate in-memory cache for next access
+          setCachedPlaintext(event.id, dbCached)
+          return this.buildDirectMessage(event, dbCached, myPubkey, 'nip04')
         }
 
         const otherPubkey = this.getOtherPartyPubkey(event, myPubkey)
@@ -203,18 +283,44 @@ class DMService {
 
         const decryptedContent = await encryption.nip04Decrypt(otherPubkey, event.content)
 
-        // Cache the decrypted content
+        // Cache in both layers
+        setCachedPlaintext(event.id, decryptedContent)
         indexedDb.putDecryptedContent(event.id, decryptedContent).catch(() => {})
 
         return this.buildDirectMessage(event, decryptedContent, myPubkey, 'nip04')
       } else if (event.kind === KIND_GIFT_WRAP) {
-        // NIP-17 - check unwrapped cache first (includes sender info)
+        // NIP-17 - check in-memory cache first
+        const memCached = getCachedPlaintext(event.id)
+        if (memCached) {
+          // We stored "pubkey|recipient|content" format in memory for NIP-17
+          const parts = memCached.split('|', 3)
+          if (parts.length === 3) {
+            const [senderPubkey, recipientPubkey, content] = parts
+            if (recipientPubkey === '__reaction__') return null
+            const seenOnRelays = client.getSeenEventRelayUrls(event.id)
+            return {
+              id: event.id,
+              senderPubkey,
+              recipientPubkey,
+              content,
+              createdAt: event.created_at,
+              encryptionType: 'nip17',
+              event,
+              decryptedContent: content,
+              seenOnRelays: seenOnRelays.length > 0 ? seenOnRelays : undefined
+            }
+          }
+        }
+
+        // Check IndexedDB cache (includes sender info)
         const cachedUnwrapped = await indexedDb.getUnwrappedGiftWrap(event.id)
         if (cachedUnwrapped) {
           // Skip reactions in cache for now (they're stored but not returned as messages)
           if (cachedUnwrapped.recipientPubkey === '__reaction__') {
             return null
           }
+          // Populate in-memory cache
+          setCachedPlaintext(event.id, `${cachedUnwrapped.pubkey}|${cachedUnwrapped.recipientPubkey}|${cachedUnwrapped.content}`)
           const seenOnRelays = client.getSeenEventRelayUrls(event.id)
           return {
             id: event.id,
@@ -253,7 +359,8 @@ class DMService {
 
         const recipientPubkey = this.getRecipientFromTags(innerEvent.tags) || myPubkey
 
-        // Cache the unwrapped inner event (includes sender info)
+        // Cache in both layers
+        setCachedPlaintext(event.id, `${innerEvent.pubkey}|${recipientPubkey}|${unwrapped.content}`)
         indexedDb
           .putUnwrappedGiftWrap(event.id, {
             pubkey: innerEvent.pubkey,
@@ -369,8 +476,14 @@ class DMService {
     const sentEvents: Event[] = []
 
     // Get recipient's relays for better delivery
-    const recipientRelays = await this.fetchPartnerRelays(recipientPubkey)
-    const allRelays = [...new Set([...relayUrls, ...recipientRelays])]
+    // Use inbox relays for NIP-17 (where recipient receives messages)
+    // Use write relays for NIP-04 (where recipient publishes from)
+    const [recipientInboxRelays, recipientWriteRelays] = await Promise.all([
+      this.fetchPartnerInboxRelays(recipientPubkey),
+      this.fetchPartnerRelays(recipientPubkey)
+    ])
+    const allRelays = [...new Set([...relayUrls, ...recipientWriteRelays])]
+    const inboxRelays = [...new Set([...relayUrls, ...recipientInboxRelays])]
 
     if (existingEncryption === null) {
       // No existing conversation - send in BOTH formats
@@ -388,11 +501,12 @@ class DMService {
 
       try {
         if (encryption.nip44Encrypt) {
+          // Use inbox relays for NIP-17 delivery
           const nip17Event = await this.createAndPublishNip17DM(
             recipientPubkey,
             content,
             encryption,
-            allRelays
+            inboxRelays
           )
           sentEvents.push(nip17Event)
         }
@@ -414,7 +528,7 @@ class DMService {
         throw error // Re-throw so caller knows it failed
       }
     } else if (existingEncryption === 'nip17') {
-      // Match existing NIP-17 encryption
+      // Match existing NIP-17 encryption - use inbox relays
       if (!encryption.nip44Encrypt) {
         throw new Error('Encryption does not support NIP-44')
       }
@@ -423,7 +537,7 @@ class DMService {
           recipientPubkey,
           content,
           encryption,
-          allRelays
+          inboxRelays
         )
         sentEvents.push(nip17Event)
       } catch (error) {
@@ -533,7 +647,7 @@ class DMService {
       // Try to get relay list from IndexedDB first
       const cachedEvent = await indexedDb.getReplaceableEvent(pubkey, kinds.RelayList)
       if (cachedEvent) {
-        return this.parseRelayList(cachedEvent)
+        return this.parseWriteRelays(cachedEvent)
       }
 
       // Fetch from relays
@@ -546,7 +660,7 @@ class DMService {
       if (relayListEvents.length > 0) {
         const event = relayListEvents[0]
         await indexedDb.putReplaceableEvent(event)
-        return this.parseRelayList(event)
+        return this.parseWriteRelays(event)
       }
 
       // Fallback to archive relay
@@ -557,9 +671,41 @@ class DMService {
   }
 
   /**
-   * Parse relay list from kind 10002 event
+   * Fetch partner's inbox (read) relays for NIP-17 DM delivery
+   * NIP-65: Inbox relays are where a user receives messages
    */
-  private parseRelayList(event: Event): string[] {
+  async fetchPartnerInboxRelays(pubkey: string): Promise<string[]> {
+    try {
+      // Try to get relay list from IndexedDB first
+      const cachedEvent = await indexedDb.getReplaceableEvent(pubkey, kinds.RelayList)
+      if (cachedEvent) {
+        return this.parseInboxRelays(cachedEvent)
+      }
+
+      // Fetch from relays
+      const relayListEvents = await client.fetchEvents(BIG_RELAY_URLS, {
+        kinds: [kinds.RelayList],
+        authors: [pubkey],
+        limit: 1
+      })
+
+      if (relayListEvents.length > 0) {
+        const event = relayListEvents[0]
+        await indexedDb.putReplaceableEvent(event)
+        return this.parseInboxRelays(event)
+      }
+
+      // Fallback to big relays
+      return BIG_RELAY_URLS
+    } catch {
+      return BIG_RELAY_URLS
+    }
+  }
+
+  /**
+   * Parse write (outbox) relays from kind 10002 event
+   */
+  private parseWriteRelays(event: Event): string[] {
     const writeRelays: string[] = []
 
     for (const tag of event.tags) {
@@ -576,6 +722,27 @@ class DMService {
     return writeRelays.length > 0 ? writeRelays : [ARCHIVE_RELAY_URL]
   }
 
+  /**
+   * Parse inbox (read) relays from kind 10002 event
+   * These are where the user receives DMs
+   */
+  private parseInboxRelays(event: Event): string[] {
+    const inboxRelays: string[] = []
+
+    for (const tag of event.tags) {
+      if (tag[0] === 'r') {
+        const url = tag[1]
+        const scope = tag[2]
+        // Include if it's a read relay or has no scope (both)
+        if (!scope || scope === 'read') {
+          inboxRelays.push(url)
+        }
+      }
+    }
+
+    return inboxRelays.length > 0 ? inboxRelays : BIG_RELAY_URLS
+  }
+
   /**
    * Check other relays for an event and return which ones have it
    */